Problem 10882. - Erwin Just; Norman Schaumberger (Am. Math. Mon., 2001)

Problem 10954. - Erwin Just; Norman Schaumberger (Am. Math. Mon., 2002)

A Little Convexity: 10882. - Erwin Just; Norman Schaumberger; Paul Budney (Am. Math. Mon., 2002)

Problem 11010. - Erwin Just; Norman Schaumberger (Am. Math. Mon., 2003)

Points on a Circle: 10954. - Erwin Just; Norman Schaumberger; Albert Stadler (Am. Math. Mon., 2003)

Regular Polygon Inscription: 11010. - Erwin Just; Norman Schaumberger; et al. (Am. Math. Mon., 2005)